CVE-2026-38577

CVE-2026-38577 — Tenda HG21 Hardcoded Root Credentials Summary Field| Value ---|--- CVE ID| CVE-2026-38577 Vendor| Tenda Product| Tenda HG21 XPON Fiber Modem Affected Version| V4.0.0-260302 Product Key| HG21-V1.0-TDE01 Hardware Version| V1.0 Firmware Build Date| 2026-03-02 Firmware File|...

CVE-2026-38577-by-deepak-Anmol

CVE-2026-38577 — Tenda HG21 Hardcoded Root Credentials Summary Field| Value ---|--- CVE ID| CVE-2026-38577 Vendor| Tenda Product| Tenda HG21 XPON Fiber Modem Affected Version| V4.0.0-260302 Product Key| HG21-V1.0-TDE01 Hardware Version| V1.0 Firmware Build Date| 2026-03-02 Firmware File|...

Tenda HG21 Hardcoded Root Credentials

Firmware analysis of the Tenda HG21 XPON fiber modem revealed a hardcoded administrative account baked into the shipped firmware image. The account is granted full root privileges UID 0 and its credentials are static across devices, meaning any attacker who can reach an exposed management service...